Nut-wrench



(N0 Model.)

J. A. MILLER.

NUT WRENCH.

Patented July 5, 1881.

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UNITED STATES PATENT OFFICE.

JOHN A. MILLER, OF ST. CHARLES, MISSOURI.

NUT-WRENCH.

SPECIFICATION forming part of Letters Patent No. 243,942, dated July 5, 1881.

Application filed April 25, 1881.

To all whom it may concern:

Be it known that I, JOHN A. MILLER, of St. Charles, Missouri, have made a new and useful Improvementin Nut-I/Vrenches, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification, in which- Figure 1 is a view in perspective of that portion of the tool with which the improvement is immediately connected; Fig. 2, an edge elevation of the same, a portion of the wrench proper and holder being in section; Fig. 3, a detail, being a side elevation of the pawl and the immediately-sorroundiug parts; Fig. 4, an edge elevation of the parts shown in Fig. 3; and Fig. 5 a section taken through the wrench proper, crank, and wrench-holder, and showing a nut in position.

The same letters denote the same parts.

I have heretofore (April 12, 1881) patented an improvement in that class of nut-Wrenches wherein the wrench is turned continuously without being removed from the nut, the continuous rotary movement of the wrench being effected by a backward-and-forward movement of the wrench holder operating upon the wrench through a pawl-and-ratehet construction.

The present invention is an improvement in the class referred to, being adaptable as an attachment to many varieties of such wrenches, and especially to theone particularly named. Its office is to provide means for obviating the use of the main wrench-holder with its comparatively slow movement in the initial portion of the operation, and for readily and rapidly screwing the nut into position for being tightened, whereupon the final tightening and driving home of the nut are effected with the main wrench-holder.

Referring to the drawings, A represents a wrench embodying the present improvement, having the wrench proper B, the ratchet G, wrench-holder D, pawl E, and handle F, substantially as in the patented construction referred to.

G represents an attachment to the wrench B in the form of a plate or arm, and furnished with a handle, H,formin g substantiallya crank by which the wrench B can be rotated in its bearing in the holder D. The crank is con- (No model.)

nected with the wrench preferably by means of the projection g, which is made to fit the socket b of the wrench. A thumb-screw, g

.serves to hold the crank to the wrench, and a flange, g, projects laterally around the projection g and bears against the end of the wrench. The plate G is perforated at g to provide an opening for the end of the bolt as the nut is screwed thereon. It is also perforated at g to receive a wedge, I, and as the present improvement can be used in connection with a wrench having reducing-sockets (as in the patented construction above named) the perforation g is preferably extended to meet the central perforation, 9

In use the nut J is placed on the bolt and the wrench applied thereto, and by means of the crank Gr rotated continuously until the nut begins to bind. As during this stage of the operation but slight power, comparatively, needs to be exerted, the nut can be easily as well as rapidly turned, as described; but in finally screwing the nut to its bearing more power is required, and the holder D is now op erated by means of the handle F. This takes more time, but more leverage is obtained, es-

pecially in connection with the pawl E and ratchet G, and the nut is readily tightened, as desired.

Instead of first placing the nut upon the bolt and then applying the wrench, the nut, in working overhead, can be placed in the socket b (the plate G serving to support the nut therein) and then applied to the bolt, and the operation proceeded with as before. In this kind of work (overhead) it is frequently desirable to have the wrench upheld upon the nut. This is accomplished by means of the wedge I, which is forced between the wrench and nut, as shown in Figs. 2 and 5. The wedge I is slotted at i for the insertion of a wedge, when it is desired to remove the wrench from the nut.

While the crank G is being used the pawl E may be drawn back from the ratchet (J and held by means of a pin, K, Figs. 1, 2, and 4, which is arranged to work transversely in the handle F. When the pawl is to be held back, as in Fig. 3, the pin K is pushed inward, so that its inner end engages in a perforation, e, in the pawl. To release the pawl the pin is allowed to drop back out of the pawl, the two positions being shown, respectively, in Figs. 4 and 2. A shoulder, k, on the pin keeps the pin from slipping from the handle.

The wrench B- is grooved at I) to receive a screw, L, Fig. 2, which assists in keeping the wrench B in the holder D.

By detaching the crank G from the wrench B, which can be done by loosening the screw 9 the Wrench can be removed from the holder D. The crank and wrench B can then be combined and used separately from the holder D and handle 1*.

I claim- 1. The combination of the crank G, having handle H, and the perforated projection g, and the wrench B, substantially as described.

2. The combination of the wrench B, and the crank G, having handle H, and the perforated projection g, and the flange g,substantially as described.

3. The combination of the wrench B and the slotted wedge I, substantially as described.

4. In combination with the wrench B, the crank Gr, having the perforation 9 as and for the purpose described.

5. The crank Gr, having the perforation 9 the wrench B, and wedge I, substantially as described.

6. The combination of the handle F, pin K, and pawl E, substantially as described.

'7 JOHN A. MILLER. Witnesses:

LoUIs H. BREKER, HENRY B. DENKER. 

